Patents by Inventor Fumiko Sakai

Fumiko Sakai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8765789
    Abstract: The present invention relates to a compound which has a glucokinase-activating effect and is useful as a therapeutic agent for diabetes mellitus, being represented by a formula (I): [wherein X1 represents a nitrogen atom, sulfur atom, oxygen atom or the like; R1 represents a 6- to 10-membered aryl group, 5- to 7-membered heteroaryl group or the like; D represents an oxygen atom or sulfur atom; R2 and R3 are the same or different, each representing a hydrogen atom, lower alkyl group or the like; a formula (II) represents an optionally substituted 5- to 7-membered heteroaryl group or the like; a formula (III) represents a monocyclic or bicyclic heteroaryl group] or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: July 1, 2014
    Assignee: MSD K.K.
    Inventors: Morihiro Mitsuya, Makoto Bamba, Fumiko Sakai, Hitomi Watanabe, Yasuhiro Sasaki, Teruyuki Nishimura, Jun-ichi Eiki
  • Patent number: 8344003
    Abstract: The present invention relates to a compound which has a glucokinase-activating effect and is useful as a therapeutic agent for diabetes mellitus, being represented by a formula (I): [wherein X1 represents a nitrogen atom, sulfur atom, oxygen atom or the like; R1 represents a 6- to 10-membered aryl group, 5- to 7-membered heteroaryl group or the like; D represents an oxygen atom or sulfur atom; R2 and R3 are the same or different, each representing a hydrogen atom, lower alkyl group or the like; a formula (II) represents an optionally substituted 5- to 7-membered heteroaryl group or the like; a formula (III) represents a monocyclic or bicyclic heteroaryl group] or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: January 1, 2013
    Assignee: MSD K. K.
    Inventors: Morihiro Mitsuya, Makoto Bamba, Fumiko Sakai, Hitomi Watanabe, Yasuhiro Sasaki, Teruyuki Nishimura, Jun-ichi Eiki
  • Patent number: 7932394
    Abstract: A glucokinase activator is provided; and a treatment and/or a preventive for diabetes, or a treatment and/or a preventive for diabetes such as retinopathy, nephropathy, neurosis, ischemic cardiopathy, arteriosclerosis, and further a treatment and/or a preventive for obesity are provided. The invention relates to a compound of a formula (I): [wherein R1 and R2 represent a hydrogen, etc.; R3 represents a hydrogen atom, a halogen atom, etc.; R4 each independently represents a hydrogen atom, a lower alkyl group, etc.; Q represents a carbon atom, a nitrogen atom or a sulfur atom (the sulfur atom may be mono- or di-substituted with an oxo group); R5 and R6 each represent a hydrogen atom, a lower alkyl group, etc.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: April 26, 2011
    Assignee: MSD K.K.
    Inventors: Noriaki Hashimoto, Keiji Takahashi, Chisato Nakama, Yoshio Ogino, Fumiko Sakai, Teruyuki Nishimura, Jun-ichi Eiki
  • Patent number: 7728025
    Abstract: A glucokinase activator is provided; and a remedy and/or a preventive for diabetes, or a remedy and/or a preventive for diabetes such as retinopathy, nephropathy, neurosis, ischemic cardiopathy, arteriosclerosis, and further a remedy and/or a preventive for obesity are provided. A glucokinase activator characterized by containing a 2-heteroaryl-substituted benzimidazole derivative of a general formula (I-0) or its pharmaceutically-acceptable salt: [in the formula, X represents a carbon atom or a nitrogen atom; X1, X2, X3 and X4 each independently represent a carbon atom or a nitrogen atom; the ring A represents a 5- or 6-membered nitrogen-containing aromatic hetero ring of a formula (II): (in the formula, X represents a carbon atom or a nitrogen atom); R1 represents an aryl, etc.; R2 represents a hydroxy, etc.; R3 represents a —C1-6 alkyl, etc.; R4 represents a —C1-6 alkyl, etc.; X5 represents —O—, etc.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: June 1, 2010
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Katsumasa Nonoshita, Makoto Ishikawa, Hiroshi Nakashima, Daisuke Tsukahara, Yoshio Ogino, Fumiko Sakai, Yoshikazu Nagae, Keisuke Arakawa, Teruyuki Nishimura
  • Publication number: 20100041660
    Abstract: The present invention relates to a compound which has a glucokinase-activating effect and is useful as a therapeutic agent for diabetes mellitus, being represented by a formula (I): [wherein X1 represents a nitrogen atom, sulfur atom, oxygen atom or the like; R1 represents a 6- to 10-membered aryl group, 5- to 7-membered heteroaryl group or the like; D represents an oxygen atom or sulfur atom; R2 and R3 are the same or different, each representing a hydrogen atom, lower alkyl group or the like; a formula (II) represents an optionally substituted 5- to 7-membered heteroaryl group or the like; a formula (III) represents a monocyclic or bicyclic heteroaryl group] or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: October 23, 2009
    Publication date: February 18, 2010
    Inventors: MORIHIRO MITSUYA, Makoto Bamba, Fumiko Sakai, Hitomi Watanabe, Yasuhiro Sasaki, Teruyuki Nishimura, Jun-ichi Eiki
  • Patent number: 7629362
    Abstract: The present invention relates to a compound which has a glucokinase-activating effect and is useful as a therapeutic agent for diabetes mellitus, being represented by a formula (I): [wherein X1 represents a nitrogen atom, sulfur atom, oxygen atom or the like; R1 represents a 6- to 10-membered aryl group, 5- to 7-membered heteroaryl group or the like; D represents an oxygen atom or sulfur atom; R2 and R3 are the same or different, each representing a hydrogen atom, lower alkyl group or the like; a formula (II) represents an optionally substituted 5- to 7-membered heteroaryl group or the like; a formula (III) represents a monocyclic or bicyclic heteroaryl group] or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: December 8, 2009
    Assignee: Banyu Pharmaceutical Co., Ltd.
    Inventors: Morihiro Mitsuya, Makoto Bamba, Fumiko Sakai, Hitomi Watanabe, Yasuhiro Sasaki, Teruyuki Nishimura, Jun-ichi Eiki
  • Publication number: 20080125429
    Abstract: A glucokinase activator is provided; and a treatment and/or a preventive for diabetes, or a treatment and/or a preventive for diabetes such as retinopathy, nephropathy, neurosis, ischemic cardiopathy, arteriosclerosis, and further a treatment and/or a preventive for obesity are provided. The invention relates to a compound of a formula (I): [wherein R1 and R2 represent a hydrogen, etc.; R3 represents a hydrogen atom, a halogen atom, etc.; R4 each independently represents a hydrogen atom, a lower alkyl group, etc.; Q represents a carbon atom, a nitrogen atom or a sulfur atom (the sulfur atom may be mono- or di-substituted with an oxo group); R5 and R6 each represent a hydrogen atom, a lower alkyl group, etc.
    Type: Application
    Filed: November 1, 2005
    Publication date: May 29, 2008
    Applicant: BANYU PHARMACEUTICAL CO., LTD.
    Inventors: Noriaki Hashimoto, Keiji Takahashi, Chisato Nakama, Yoshio Ogino, Fumiko Sakai, Teruyuki Nishimura, Jun-ichi Eiki
  • Publication number: 20080070928
    Abstract: A glucokinase activator is provided; and a remedy and/or a preventive for diabetes, or a remedy and/or a preventive for diabetes such as retinopathy, nephropathy, neurosis, ischemic cardiopathy, arteriosclerosis, and further a remedy and/or a preventive for obesity are provided. A glucokinase activator characterized by containing a 2-heteroaryl-substituted benzimidazole derivative of a general formula (I-0) or its pharmaceutically-acceptable salt: [in the formula, X represents a carbon atom or a nitrogen atom; X1, X2, X3 and X4 each independently represent a carbon atom or a nitrogen atom; the ring A represents a 5- or 6-membered nitrogen-containing aromatic hetero ring of a formula (II): (in the formula, X represents a carbon atom or a nitrogen atom); R1 represents an aryl, etc.; R2 represents a hydroxy, etc.; R3 represents a —C1-6 alkyl, etc.; R4 represents a —C1-6 alkyl, etc.; X5 represents —O—, etc.
    Type: Application
    Filed: December 28, 2004
    Publication date: March 20, 2008
    Inventors: Katsumasa Nonoshita, Makoto Ishikawa, Hiroshi Nakashima, Daisuke Tsukahara, Yoshio Ogino, Fumiko Sakai, Yoshikazu Nagae, Keisuke Arakawa, Teruyuki Nishimura, Jun-Ichi Eiki
  • Patent number: 5527385
    Abstract: A thermochromic composition which comprises(1) an electron-donating chromogenic organic compound,(2) an electron-accepting compound,(3) at least one desensitizer selected from among hydrazide compounds, and(4) a thermochromic transition temperature modifier.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: June 18, 1996
    Assignee: Sakura Color Products Corporation
    Inventors: Masaaki Sumii, Fumiko Sakai, Yasuyuki Yoshimura
  • Patent number: 5350633
    Abstract: A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, and (3) at least one desensitizer selected from among carbazole derivatives of the following formulas: ##STR1## wherein R is an alkyl group containing 1 to 22 carbon atoms, a phenyl group or a benzyl group and X is a hydrogen atom, a halogen atom, --NH.sub.2, --NO.sub.2 or --CHO; ##STR2## wherein R is an alkyl group containing 1 to 22 carbon atoms and X is a hydrogen atom, a halogen atom, --NH.sub.2, --NO.sub.2 or --CHO. A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, (3) at least one desensitizer selected from among carbazole derivatives mentioned above, and (4) a thermochromic transition temperature modifier. A thermochromic composition which comprises one of the thermochromic compositions mentioned above as enclosed in microcapsule.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: September 27, 1994
    Assignee: Sakura Color Products Corporation
    Inventors: Masaaki Sumii, Fumiko Sakai, Yasuyuki Yoshimura
  • Patent number: 5350634
    Abstract: A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, and (3) at least one desensitizer selected from among diphenylamine derivatives of-the following formulas: ##STR1## wherein R.sup.1 and R.sup.2 each independently is H, an alkyl group containing 1 to 22 carbon atoms, ##STR2## (in which R.sup.3 and R.sup.4 each independently is H, an alkyl group containing 1 to 4 carbon atoms). A thermochromic composition which comprises (1) an electron-donating chromogenic organic compound, (2) an electron-accepting compound, (3) at least one desensitizer selected from among diphenylamine derivatives mentioned above, and (4) a thermochromic transition temperature modifier. A thermochromic composition which comprises one of the thermochromic compositions mentioned above as enclosed in microcapsule.
    Type: Grant
    Filed: August 10, 1993
    Date of Patent: September 27, 1994
    Assignee: Sakura Color Products Corporation
    Inventors: Masaaki Sumii, Fumiko Sakai, Yasuyuki Yoshimura